GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Distance/Speed/Time - Explained

Axel and Leuthner are driving on a motorway and see a road sign indicating the distance and average time to junction 8. Leuthner claims they need to exceed the speed limit to cover 30 miles in 26 minutes. The video tutorial explains how to calculate the required speed using the distance-speed-time formula, converting minutes to hours for accurate mph calculation. The calculated speed is 69.23 mph, which is below the 70 mph speed limit, proving Leuthner's claim incorrect. The tutorial emphasizes the importance of unit conversion and awards marks for correct calculation and conclusion.

What is the speed limit on the motorway mentioned in the video?

• 70 mph

• 90 mph

• 80 mph

• 60 mph

What formula is used to calculate speed in the video?

• Speed = Time / Distance

• Speed = Distance x Time

• Speed = Distance / Time

• Speed = Time x Distance

How many minutes are converted into hours for the speed calculation?

• 60 minutes

• 26 minutes

• 20 minutes

• 30 minutes

What is the calculated speed needed to travel 30 miles in 26 minutes?

• 69.23 mph

• 71 mph

• 68.5 mph

• 70 mph

Why is it important to convert minutes into hours in the speed calculation?

• To increase accuracy

• To match the units of speed in mph

• To make the calculation easier

• To reduce the number of calculations